Traction-engine



(No M56161. W. L. SHEPHERD TRACTION ENGINB- No. 299,427. Pat'entedMay27*, 1884.

. (Alnlmm avg r 3 LE CO W UNITED STAT S PATENT OFFICE.

WILLIAM L. SHEPHERD, OF DANVILLE, Iowa.

TRACTION-ENGINE.

SPECIFICATION forming part of Letters Patent llo. 299,427, datedMay-2'].

Application llled March 15, 1884. so model.)

To all whom .it may concern.-

Be it known that 1, WILLIAM L.- SHEP- HER-D, a citizen of the UnitedStates of America, residing at Danville, in the county of Des Moines andState of Iowa, have invented certain new and useful Improvements inSprings for Traction-Engines; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same, reference being had to the accompanying drawings, and toletters or figures of reference marked thereon, which form a part ofthis specification.

This invention relates to certain new and useful improvements inspring-supports for traction-engines, its object being to provide aspring-bearing for the wheels which support the boiler, whereby avertical movement. of the same will be allowed without interfering orslacking the propelling means.

In the drawings which illustrate my invention, Figure 1 is a side viewshowing my invention applied to a tractionenginc. Fig.2 is a detailperspective view. Fig. 3 is a sectional View, and Fig. 4 a detail view,of the sliding block.

A represents a traction or portable engine, which is mounted on wheels,and is provided with means for propelling the same, which. means consistof chains or belts which pass from the engine to a'pulley attached tothe same, at a suitable point from which pulley another belt passes overa flange or pulley at-- tached to the driving-wheel, which is indicatedby the letter B.

0 represents a curved and slotted case, which is firmly secured byrivets or bolts to the engine. This case is curved, so as toform thesegment of a circle, the center of the pulley c forming the center ofthe are. The lower end of the case maybe open, so that the block,

D, whiclris shaped so asto correspond witlti the T-slot, may be insertedtherein; or they lower end may be closed, in which case'the ,5

diameter than the slot, will be prevented front falling out of saidopening. When'a'spiral spring is employed, the upper end of the same maybe secured to the closed end of the case while its opposite end isattached to the sliding block, which will prevent the block fall ing outof the slot when the wheel is removed for lubricating. The sliding blockD has side flanges, dd, and a raised central portion, d,.' to whichthestub=axle c is attached, and the slot in the plate corresponds inshape there with, bot-h being curved, asshown. It will be evident fromthe foregoing descrip-'= tion of my invention that vI provide a spring:bearing for the axle, and that a change of po; sition of said axle willnot loosen the driving belt as the different pulleys will always be at 1the same distance from eachother. What Iclaim isv In a traction-engine,the curved slotted Gas 0, attached thereto and provided with a spring,and a sliding block, D, having. -;astub-axle, substantially as shown,and for-"the purposes set forth.

' In testimony whereof I aflix my signatnreinfit presence of twowitnesses. \VILLIAM L. SHEPHERD.

'Witncsses:

R, A. ScovEL, JOHN SHEPHERD.

